|
|
|
Digital Dispatch - Is the Internet Safe?
The simple answer is no. Most of the computers today are vulnerable to some kind of hacker or virus attack. If you don't believe me, just pickup any newspaper or listen to any news show, computer attacks happen everyday. Should you stop using the...
QArea announces its Wireless Casino ready for stress testing on PDA and cell phones
Kharkov, Ukraine - August 2, 2005 - QArea, the leading developer and tester of applications for PDA's and smart phones also being the originator of the pioneering BugHuntress Test Suite for automated PDA applications testing, announces its...
Real Estate - Investments That Increase Your Net Worth
Consider these parameters for a real estate deal:
Property Value: $250,000 Purchase Price: $160,000 Repairs:
$2,500
If you analyze the numbers, you see that the equity available in
this deal is $87,500 (Property Value minus Purchase...
The next Internet marketing gold rush
Video on the Internet is shaping up to become the next Internet
marketing gold rush.
I predict that in 2006 Internet marketers will spend more on
video than on all other Internet marketing tools combined.
And they might be making a huge...
Wireless Internet Terminology - Confusion Or Clarity?
Wireless Internet Terminology, like many things in life,
especially those that have anything to do with computers is
filled with terminology. But like most things, once you learn a
few of the basic terms, understanding will come quickly....
|
|
| |
|
|
|
|
|
|
Wireless Network
If you want to have a network in your home or office, you can
connect the computers together using a wireless network also
known as 802.11 networking and WiFi. (Wireless Fidelity). You
can connect computers anywhere in your home or office without
the need for wires. The computers connect to the network using
radio signals, and computers can be up to 100 feet or so apart.
Wi-Fi (Wireless Fidelity) is a logo and term given to any IEEE
802.11 wireless network product that is certified to conform to
specific interoperability standards. Wi-Fi Certification comes
from the Wi-Fi Alliance, a nonprofit international trade
organization that tests 802.11-based wireless equipment to
ensure it meets the Wi-Fi standard. To wear the Wi-Fi logo, an
802.11 networking product must pass specific compatibility and
performance tests, which ensure that the product will work with
all other manufacturers' Wi-Fi equipment on the market. This
certification arose from the fact that certain ambiguities in
the 802.11 standards allowed for potential problems with
interoperability between devices. By purchasing only devices
bearing the Wi-Fi logo, you ensure that they will work together
and not fall into loopholes in the standards. The most common
forms of wireless networking in the United States and Canada are
built around various versions of the IEEE 802.11 wireless
Ethernet standards, including IEEE 802.11b, IEEE 802.11a, and
the newer IEEE 802.11g standard. In Europe, HiperLAN, which has
performance and frequency usage similar to that of 802.11a, is
the wireless networking standard. In the past, Wi-Fi has been
used as a synonym for IEEE 802.11b hardware. Because the Wi-Fi
Alliance now certifies other types of 802.11 wireless networks,
the term Wi-Fi should always be accompanied by the frequency
band (as in Wi-Fi 2.4GHz band) to make it clear which products
will work with the device. The new 802.11g wireless standard has
the speed of 802.11a, but connects to 802.11b networks without
special hardware. As 802.11g hardware passes Wi-Fi Alliance
tests, it will also be known as Wi-Fi-compliant hardware.Here it
is a table of 802.11-compliant networks: Table 20.9. IEEE
802.11-Based Wireless Networks IEEE Standard Maximum Speed Wi-Fi
Alliance Term Number of Nonoverlapping Channels Also Known As
Notes 802.11a 54Mbps 5GHz band 12 Wireless-A Dual-band hardware
needed to connect with 802.11b 802.11b 11Mbps 2.4GHz band 3
Wireless-B Can connect with 802.11g; dual-band hardware needed
to connect with 802.11b 802.11g 54Mbps 2.4GHz band 3 Wireless-G
Can connect with IEEE 802.11b; dual-band hardware needed to
connect with 802.11a
802.11 Network Hardware All types of 802.11 wireless networks
have two basic components: * Access points * NICs equipped with
radio transceivers An access point is a bookend-size device that
uses an RJ-45 port to attach to a 10BASE-T or 10/100 Ethernet
network (if desired) and contains a radio transceiver,
encryption, and communications software. It translates
conventional Ethernet signals into wireless Ethernet signals it
broadcasts to wireless NICs on the network and performs the same
role in reverse to transfer signals from wireless NICs to the
conventional Ethernet network Access points are not necessary
for direct peer-to-peer networking (also called ad hoc
mode),
but they are required for a shared Internet connection or a
connection with another network. When access points are used,
the network is operating in the infrastructure mode.Some access
points can communicate directly with each other via radio waves,
enabling you to create a wireless backbone that can cover a wide
area, such as a warehouse, without the need to run any network
cabling. NICs equipped for wireless Ethernet communications have
a fixed or detachable radio antenna in place of the usual
coaxial or RJ-45 port or dongle. Adding WiFi to a Computer One
of the best things about WiFi is how simple it is. Many new
laptops already come with a WiFi card built in -- in many cases
you don't have to do anything to start using WiFi. It is also
easy to add a WiFi card to an older laptop or a desktop PC.
Here's what you do: * Buy a 802.11a, 802.11b or 802.11g network
card. 802.11g has the advantage of higher speeds and good
interoperability on 802.11b equipment. o For a laptop, this card
will normally be a PCMCIA card that you slide into a PCMCIA slot
on your laptop. Or you can buy a small external adapter and plug
it into a USB port. o For a desktop machine, you can buy a PCI
card that you install inside the machine, or a small external
adapter that you connect to the computer with a USB cable. *
Install the card * Install the drivers for the card * Find an
802.11 hotspot * Access the hotspot. A hotspot it is a acces
point. There are many WiFi hotspots now available in public
places like restaurants, hotels, libraries and airports. WiFi
Security Because wireless networks can be accessed by anyone
with a compatible NIC most models of NICs and access points
provide for encryption options. Some devices with this feature
enable you to set a security code known as an SSID on the
wireless devices on your network. This seven-digit code prevents
unauthorized users from sneaking onto your network and acts as
an additional layer of security along with your normal network
authentication methods, such as user passwords. Others use a
list of authorized MAC numbers (each NIC has a unique MAC) to
limit access to authorized devices only. All Wi-Fi products
support at least 40-bit encryption through the wired equivalent
privacy (WEP) specification, but the minimum standard on recent
products is 64-bit WEP encryption. Many vendors offer 128-bit or
256-bit encryption on some of their products. Unfortunately, the
WEP specification has been shown to be notoriously insecure
against determined hacking.For that reason, many network
products introduced in 2003 and beyond now incorporate a new
security standard known as Wi-Fi Protected Access (WPA). WPA is
derived from the developing IEEE 802.11i security standard.
WPA-enabled hardware works with existing WEP-compliant devices,
and software upgrades might be available for existing devices.
You should match the encryption level and encryption type used
on both the access points and the NICs for best security.
Remember: If some of your network supports WPA but other parts
support only WEP, your network must use the lesser of the two
security standards (WEP). http://www.jaec.info
About the author:
Masterand - " STIC University" , Faculty of Electrical
Engineering and Computer Science, Specialization Software
Engineering web:www.jaec.info
|
|
|
|
|
| Computer networking - Wikipedia, the free encyclopedia |
| Network cards such as this one can transmit data at high rates over Ethernet cables. ... Computer networking is sometimes considered a sub-discipline of ... |
| en.wikipedia.org |
|
| Social network - Wikipedia, the free encyclopedia |
| Social network analysis (related to network theory) has emerged as a key ... Social networking also refers to a category of Internet applications to help ... |
| en.wikipedia.org |
|
| Networking on the Network |
| Here, then, are some of the fundamentals of professional networking. ... Asking advice from the people in your network is part of the process. ... |
| polaris.gseis.ucla.edu |
|
| Computer Networking - Wireless Networks - Home and Wireless ... |
| Site offers coverage of computer network technology in basic networks, VPN, Web servers, Intranets and Extranets, tutorials, and troubleshooting. |
| compnetworking.about.com |
|
| ITtoolbox Networking Knowledge Base |
| A networking community for IT professionals. Focusing on connectivity, network management, network operating systems, security, and other aspects of ... |
| networking.ittoolbox.com |
|
| Howstuffworks "How Home Networking Works" |
| How home networking works and the different methods to create a home network. |
| www.howstuffworks.com |
|
| SmallNetBuilder |
| SmallNetBuilder provides networking and IT news, reviews, help and information for professional and "prosumer" SOHO and SMB users. |
| www.smallnetbuilder.com |
|
| Network Computing - Computer Networking, Network Security and ... |
| Network Computing - Computer Networking, Network Security & Management news. Enterprise product reviews, comparisons and analysis built by IT professionals ... |
| www.networkcomputing.com |
|
| CareerJournal | Career Networking - Professional Network ... |
| Professional Network - Career networking news and advice from The Wall Street ... Networking tips that will help you advance your job search or career. |
| www.careerjournal.com |
|
| Trail: Custom Networking (The Java™ Tutorials) |
| The first describes the networking capabilities of the Java platform that you ... The second provides a brief overview of networking to familiarize you with ... |
| java.sun.com |
|
| Windows Server 2003, Longhorn Server & Vista Networking Articles |
| Features a wealth of tutorials on various Windows networking related topics such as setting up Windows NT/XP/2000/2003 networks, troubleshooting, ... |
| www.windowsnetworking.com |
|
| IBM Networking | IBM Networking |
| The era of e-business on demand requires superlative networking capability. ... IBM Networking Services provides e-business solutions anywhere in the ... |
| www.networking.ibm.com |
|
| Computerworld - Networking - Voip - Bluetooth - Firewall - Wireless |
| Computerworld, the 'Voice of IT Management' is your information source for computer networking. Access up to date information on LAN/WAN, hardware/devices, ... |
| www.computerworld.com |
|
| HP Networking products and solutions |
| HP ProLiant networking products provide high-powered, simple solutions for enterprise, business, or home networking environments, including ProLiant and ... |
| www.hp.com |
|
| Monster: Networking |
| Networking Networking Timeline. Networking Timeline · Making New Contacts · How to Set Up and Run an Informational Interview · Nurturing and Keeping ... |
| content.monster.com |
|
| Access | CNET News.com |
| Phone company shrugs off competition concerns over Verizon's Fios network, saying existing copper is doing the bandwidth trick. ... |
| news.com.com |
|
| Network Management: Covering today's Network topics |
| Find the latest information on Network Management, Network Security, Network Design and more. |
| searchnetworking.techtarget.com |
|
| cisco networking academy program |
| cisco.netacad.net/ - 1k - Cached - Similar pages |
|
|
| Networking and Your Job Search: The Riley Guide |
| Networking starts long before a job search, and you probably don't even realize you are doing it. ... In Terms of a Job Search, Networking is the way to Go! ... |
| www.rileyguide.com |
|
| NetworkWorld.com |
| Networking news, reviews, opinions and forums from the Leader in Network Knowledge. |
| www.networkworld.com |
|
|